html,
body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
}
#app{
  padding: 0;
}
body,
div,
span,
h1,
h2,
h3,
h4,
h5,
h6,
p,
form,
table,
ul,
ol,
dl,
li,
dt,
dd,
input,
button {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

input,
button {
    border: 0;
}

input {
    outline: none;
}

a,
a:hover,
a:focus {
    color: #000;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}